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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Calmodulin regulates nucleotide hydrolysis activity of tissue transglutaminase.

The interaction of calmodulin with purified guinea pig liver transglutaminase was studied. The nucleotide (ATP and GTP) hydrolysis activity of this tissue transglutaminase was transiently increased and then gradually decreased depending on calmodulin concentration. The peak activation was obtained in the presence of a stoichiometric amount of calmodulin. The effect of calmodulin on the classical transglutaminase activity was minimal. Fluorescence spectroscopy demonstrated that the enzyme produced a significant blue shift in the emission peak of dansylated calmodulin. Interestingly, Ca2+ was not required for the interaction between the two proteins. The results described here give an additional regulatory role to calmodulin.[1]

References

  1. Calmodulin regulates nucleotide hydrolysis activity of tissue transglutaminase. Takeuchi, Y., Birckbichler, P.J., Patterson, M.K., Lee, K.N., Carter, H.A. Z. Naturforsch., C, J. Biosci. (1994) [Pubmed]
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